Where does the Iceman come from?

Preistoria Alpina
v. 35 (1999)
Museo Tridentino di Scienze Naturali
Trento 2001 ISSN 0393-0157
Where does the Iceman come from?
KLAUS OEGGL
ABSTRACT - Palaeoethnobotanical analyses of the wood remains and the mosses found with the Iceman as
wel1 as the food residues of his colon produce new evidence of his diet, environment and season of death. The
dendroeco1ogica1 investigations of the wood species and the bryo1ogical investigations of the mosses of the
Iceman show a c1ear trend that he 1ived in the valleys South of the main Alpine range.
Key words: Iceman, Pa1aeoethnobotanical analyses, Dendroecological investigations
Parole chiave: Uomo dei Ghiacci, Analisi paleoetnobotaniche, analisi dendroeco1ogiche
Klaus Oeggl - Institut fur Botanik der Leopold-Fanzens-Universitat Innsbruck, Sternwartestrasse 15, A-6020
Innsbruck, Austria. E-mail: [email protected]
1. INTRODUCTION
2. METHODOLOGICAL ASPECTS
The discovery of the Iceman in the snowy area
of the Otz Valley, far from human settlements, gave
rise to many scientific queries including bis vital space. The main Alpine range on wbich he was found suggests two theories: a) his settlement was to be located
North of the range either in the Otz Valley or in the Inn
Valley; b) his settlement was to be located South in the
Schnals Valley or in the Venosta Valley.
Both of these hypothesis are discussed as well
as the respective findings. GROENMAN-VAN WATERINGE
(1992) claims that, on the basis of the pollen spectrum
on the remains of the clothing of the Iceman, he carne
from North because the pollen on the fur reflects the
mountain vegetation North of the main Alpine range.
On the other hand, the archaeological evaluation of
the artefacts suggests that the man belonged to a
South Alpine cultural group (PRINOTH-FoRNWAGNER &
NIKLAUS 1995).
The following archaeobotanical findings provide information in order to reconstruct and therefore
localize the vital space of the Iceman.
The reconstruction of the vital space is deducted
on the basis of three sources of data from the finding
pIace.
The first series of data consists of dendrological
analysis of the wooden artefacts, wood and charcoal
particles that were discovered during excavations or
whilst cleaning the objects. The ecological assessment
is based on the hypothesis that wood during the Neolithic phase was an important raw material for the production of every day objects. Great quantities of this
raw material must have been available and therefore it
must have been easily found in the neighbourhood. The
wood species partially reflects the vegetation of bis
environment.
The second group of data consists of mosses that
were found on the clothes of the Iceman. The third series of data were provided by the body of the Man and
particularly from the analyses of the food remains found
in his colon. These contained macro- and microfossils
that provide information on his diet and the surrounding habitat immediately before bis death,
78
3. RESULTS
3.1. Dendrological analyses
Thirteen different species were found uncarbonized. Nine of these were used for the production of
weapons and other objects found. One was used for
binding things and the purpose of the other three objects
we do not know. AlI the types of timber found are
obviously diffused in the investigated area (Tab.1).
Montane species are predominant but there are also
types of wood that are diffused in the subalpine and
alpine areas. The classification of the timber analysis
is summarized in Fig. 1.
Other information is provided by the wood particles found in the residues obtained while cleaning the
objects and from a leaf sample (n.911139). There are
eight different types of charcoal species (Fig.2): spruce (Picea/Larix type), pine (Pinus mugo type), maple
tree (Acer), green alder (Alnus viridis),a Pomoideae,
probably juneberry (cf. Amelanchier ovalis), birch
(Betula), dwarf willow (Salix reticulata-type) and elm
(Ulmus). Quantitatively spruce (Picea/Larix type) is
the most abundant species. Sorted by species occurrence there are the same amount of montane and subalpine species (Tab.1).
3.1.1. Interpretation oJ the dendrological results
The 13 taxa documented have a circumpolar or
alpine distribution, which, on a larger scale, do not
permit any conclusions about their origin to be drawn.
The smalIer-scale distributional spectra of the woody
species, however, do reveal certain differences, since
the individuaI species extend to the inner alpine region
to different degrees. These local phytogeographic differences in the diffusion of the single species are documented (DALLA-ToRRE & SARNTHEIN, 1900) and provide indications as to the origin of the Iceman.
The phytogeographica1 evaluation provides a
heterogeneous picture. Species of alI the vegetation
zones are represented. Montane types are obviously
predominant, while the alpine and subalpine species
are less represented (Tab.1). Fragments of the snow
bed communities characterized by the dwarf willows
(Salix reticulata- type), which are typical ofthe alpine
and nival zone where the Iceman was found. The subalpine species including the dwarf mountain pine (Pinus mugo), Swiss stone pine (Pinus cembra) and the
green alder (Alnus viridis) as welI as the montane species were probably brought there by the Iceman as these types of woods never reached the height of 3200m
during the Holocene (BORTENSCHLAGER, 1992).
Spruce (Picea abies), which is typical of the
woody area taken into consideration, is the most abun-
dant species. With regard to the types oftrees, the montane species are more common. The species that were
used in making the artefacts alI come from the montane forest environments. In particular woods of oak species (Quercetalia pubescenti-petraeae) (Tab.2) that live
in warm environments prevail, along with broad-Ieaved trees and woods (Fagetalia) and above alI types of
wild plum trees and bushes (Prunetalia).
The Norway maple (Acer platanoides), the yew
(Taxus baccata), the ash (Fraxinus excelsior), the lime
(Tilia) and the elm (Ulmus) suggest woody slopes or
gorges with a local humid climate and cool ground or
variably humid grounds rich in nourishing elements.
Thermophilous species like dawny oak (Quercus pubescens) or manna ash (Fraxinus ornus) are not present in the spectrum. Species that live in dry environments like the juneberry (Amelanchier ovalis), wayfaring tree (Viburnum lantana), dogwood (Cornus) and
possibly the bast-smalI-leaved-lime (Tilia cordata)
along with the spruce (Picea abies), the larch (Larix
decidua) and pine (Pinus) recall the transition area
between thermophilous oakwoods (Quercetum pubescentis) and the montane spruce forests (Piceetum
montanum) (Tab.2).
Even the diffusion of these species in the forest
North and South of the main Alpine range differs.
Towards the North of the finding pIace in the Otz Valley and the Inn Valley, the climate and soils are ideaI
for spruce (Picea abies) and pine (Pinus). The more
demanding type of deciduous forests (Querco-Fagetea, Quercetea robori-petreae) can only be found in
limited areas and cannot spread because of the surrounding areas that are subject to frost. On the other
hand the broadleafed trees (Quercetalia pubescentis)
that prefer a warm habitat are welI diffused in the valleys South of the main Alpine range. In the lower Venosta ValIey and in the narrow entrances of the valIeys
and the gorges that stretch from North to South, these
types of woods are found up to 1l00m altitude (PEER,
1982). Considering this situation, the settlement of the
Iceman was probably in the lower part of the Venosta
ValIey or at the beginning of the Schnals ValIey.
These results are confirmed by the bryologic
analysis of the mosses found with the Iceman. Even the
phytogeographical evaluation of the mosses and in particular of the Neckera species suggests that the southem species are more common (DICKSON et al., 1996).
3.2. The colon sample
The third series of data for the reconstruction of
the vita1 space is provided by the body of the Iceman.
Pollen and plant macrofossil analysis carried out on
the food remains found in the colon of the mummy supply specific indications as to the habitat the Iceman
79
lived in, immediately before bis death. The vegetaI remains of the faeces provide more reliable data than the
artefacts, as the micro- and macrofossils were ingested
a short while before the death. The remains of the colon sample (Fig.3) consist of cereals, charcoal and mineraI partic1es, pollen, diatoms and whipworm eggs
(Trichuris trichiura).
The macroremains (FigA) consist mainly of
einkorn bran (Triticum monococcum) and chaff that
can c1early be seen from the tubular cells of the seed
hulls. Small testa remains «125m) are predominant,
which suggests the presence of a finely processed grain.
As well as einkorn (Triticum monococcum), there are
also musc1e fibres and parts of carbonized bones suggesting that meat was also eaten.
The pollen flora (Fig.5, spectrum l) found in
the food remains is much more divers than the macrofossils. Tbirty types of pollen, two of spores and 16
diatoms are documented. It is surprising that the tree
pollen represents 84% of the total amount and the non
arboreal pollen adds up only to 16%, because it would
seem obvious that herb pollen is more abundant than
tree pollen considering of ali the edible herbaceous plants.
In order to understand this, it has to be considered, how
the pollen flora in the intestines comes to existence.
The taphonomy of the pollen spectrum of the intestines
is complex and the pollen can derive from many sources. This is why the pollen has to be c1assified in artifieial groups depending on how the body assimilates it
(BRYANT, 1974; BRYANT & HOLLOWAY, 1983; REINHARD
& BRYANT, 1992). Two c1asses are distinguished: 1)
economic pollen, that stick to edible plants and are intentionally ingested; 2) background pollen, that is airborne and is unintentional ingested when breathing or
when drinking water.
3.2.1. Economie pollen
This category inc1udes pollen of cereals (Cerealia type) and legumes (Papilionaceae) that represent
cultivated plants, as well as Chenopods (Chenopodiaceae), greater plantain (Plantago major type), Lady's
thumb (Polygonum persicaria type), sheep's sorrel
(Rumex acetosella) and nettles (Urticaceae) that grow
like weeds in fields or rural areas near settlements. These
pollen probably stuck to edible plants that were consequentlyeaten.
3.2.2. Background pollen
----The remaining pollen is c1assified as background
pollen. The criteria of this c1assification are: wind dispersal, their very small amount in the occurrence of
honey in the Alpine area (VORWOHL, 1972) and the low
pollen concentration.
The spectrum (Fig.5) represents a deeiduous fo-
rest with hop-hornbeam (Ostrya carpinifolia) dominating and an admixture of birch (Betula), hazel nut
(Corylus avellana), spruce (Picea abies), and pine
(Pinus). As the hop-hornbeam (Ostrya carpinifolia) is
distributed naturally only in the southern alpine valleys, this tree is a good indicator to the location of the
settlement of the Iceman.
In order to compare this colon pollen sample with
the inneralpine vegetation, it is compared to six other
recent pollen surface spectra taken from a North-South
transect of the research area (Fig.5, spectrum 2-7). As
the pollen spectrum from the colon has a strong local
component, it cannot be related directly to the recent
pollen spectra. Nevertheless, some conc1usions can be
made:
the pollen does not derive from the ice of the find
spot, therefore melting water as a possible pollen
source can be exc1uded;
the pollen of the hop-hornbeam (Ostrya carpinijolia) is distributed only south of the main Alpine
range and indicates the typical vegetation of the
Venosta Valley and of the lower part of the
Schnals Valley;
the hop-hornbeam pollen (Ostrya carpinifolia) is
not intentionally absorbed, because the use of hophornbeam pollen for dietary or medicaI purposes is
unknown for Europe, contrary to America. Furthermore, the concentration of the pollen in the food
residue (9,300 pollen grains per gram) is too low
for an intentional consumption.
Therefore, the pollen of the hop-hornbeam (Ostrya carpinifolia) gives a strong suggestion that the Iceman stayed in the thermophilous deciduous forests of
the Schnals or Venosta Valley immediately before his
death.
The diatoms in the food residue provide information on how these pollen were ingested. All the types
documented come from fresh water and suggest that
most of the background pollen was swallowed with
water (RoTI, 2000).
4. CONCLUSIONS
Both the evaluation of the dendrological and
bryological analyses and the coprolites contained in the
intestines prove that the vital space of the Iceman was
probably South of the main Alpine range. In particular
the large quantity of the hop-hornbeam (Ostrya carpinifolia) pollen found in the food remains in the 1arge
intestine proves that the settlement of the Iceman is 10cated in the lower Venosta or Schnals Valley, where he
stayed immediately before dying. This can be determined because the microgametophyte was still preserved
80
in the hop-hombeam pollen. The exceptional preservation of the inner components of the polIen, which are
usually easily disintegrated, pravides further indications
to the Iceman's life circumstances:
the pollen was ingested by the Iceman during or very
soon after the flowering season of the hop-hombeam
(Ostrya carpinifolia);
the Ostrya pollen did not remain in the intestine for
a long tirne otherwise the celI contents would have
been digested (LINSKENS & JORDI, 1997);
it is therefore presumed that the Iceman died in spring
or at the beginning ofthe summer. This is in accordance with the evaluation of the flowering seasons
of the other arboreal pollen fram the food residue.
Furthermore, pollen of taxa, which flower in the
autumn, are missing in the colon spectrum.
SUMMARY - Palaeoethnobotanical analyses of the wood remains and the mosses found with the Iceman as well as the food
residues of his colon produce new evidence of his diet, environment and season of death. The dendroecological investigations
of the wood species and the bryological investigations of the mosses of the Iceman show a dear trend that he lived in the
valleys South of the main Alpine range. The best indication of the Iceman's provenance deliver the coprolite analyses of the
food remains from his colon. The most registered species in this pollen spectrum belongs to the hop-hornbeam (Ostrya
carpinifolia), which bas a restricted distribution to the valley bottoms South of the main Alpine range. The more so, that the
microgametophyte was still preserved within these pollen grains, it proofs, that the pollen became incorporated in the
intestines within a short time after being released from tbe inflorescences. The flowering season of the hop-hornbeam
(Ostrya carpinifolia) and of the residual pollen taxa in his colon indicate that the Iceman died in early summer at the latest.
RIASSUNTO - Le analisi paleoetnobotaniche dei resti lignei e dei muschi trovati insieme al corpo dell'uomo del Similaun
così come dei resti di cibo presenti nell'intestino colon, forniscono nuove indicazioni sulla dieta, ambiente e stagione della
morte dell'individuo. Le ricerche dendroecologiche delle specie lignee e le ricerche briologiche dei muschi mostrano che
l'uomo visse nelle valli a sud del principale arco alpino. La indicazione migliore è data dall'analisi dei resti di cibo presenti
nell'intestino colon. Le specie di pollini maggiormente presenti appartengono a Ostrya carpinifoiia che ha una distribuzione ristretta alle valli meridionali dell'arco alpino. Inoltre, risulta evidente che il polline rimase nell'intestino per un breve
periodo di tempo. La stagione della fioritura e la percentuale di polline residuo nel colon indicano che l'uomo del Similaun
morì non oltre l'inizio dell'estate.
REFERENCES
BRYANT Y.M., 1974 - The role of coprolite analysis in
archaeology. Bulletin of the Texas Archaeological
Society 45:1-28
BRYANT Y.M. & R.G. HOLLOWAY, 1983 - Tbe role of
palynology in arcbaeology. Advances in Archaeological
Method and Theory 6:191-224
BORTENSCHLAGER S., 1992 - Die Waldgrenze im Postglazial.
In: I.Eder-Kovar (ed), Palaeovegetational Development
in Europe and Regions Relevant to its Palaeofloristic
Evolution. Vienna.
DICKSON I.H., BORTENSCHLAGER S., OEGGL K., PORLEY R. &
MCMuLLEN A., 1996 - Mosses and the Iceman's
provenance. Proceedings ofthe Royal Society 263:567571. London B.
EGG M., 1992 - Zur Ausriistung des Toten vom Hauslabjoch,
Gem. Schnals (Siidtirol). In: EHopfel, W. Platzer & K.
Spindler (eds), Der Mann im Eis, Band l, Veroffentlichungen der Universitiit Innsbruck 187
GROENMAN-VAN W AATERINGE W., 1993 - Analyses of the
hides and skins from the Hauslabjoch. In: M. Egg, R.
Geodecker-Ciolek, W. Groenman-van Waateringe & K
Spindler (eds), Die Gletschermumie vom Ende der
Steinzeit aus den Otztaler Alpen. Jahrbuch des
Romisch-Germanischen Zentralmuseums 39: 114-128
LINSKENS H.E & lORDI W., 1997 - Pollen as food and medicine: a review. Economie Botany 5:78-87
PEER T., 1981 - Die aktuellen Vegetationsverhaltnisse
Siidtirols am Beispiel der Vegetationskartel:200.000.
Angewandte Pflanzensoziologie 26:151-168
PRINOTH-FORNWAGNER R. & NIKLAUS T. R. 1995: Der Mano
im Eis. Resultate der Radiokarbondatierung. In:
Spindler K, Rastbichler-Zissernigg, Wilfling H., D. Zur
Nedden, Nothdurfther H. (eds): Der Mann im Eis. Neue
Funde und Ergebnisse. The Man in the Ice, Volume 2:
77 - 90
REINHARD K.J. & BRYANT Y.M., 1992 - Coprolite analysis:
a biological perspective on archaeology. In: Schiffer
M.B. (ed), Archaeological Method and Theory, VoI.
4:245-288. Tucson & London
ROTT E., 2000 - DiatoIllS from the colon of the Iceman. In: S.
Bortenschlager & K Oeggl (eds), The Iceman and his
Natura! Environment; The Man in the Ice, VoI. 4: 117 - 126
SPINDLER K, 1996 - Iceman's last weeks. In: K Spindler,
H. Wilfling, E. Rastbichler-Zissernig, D. Nedden &
H. Nothdurfter (eds), Human Mummies: The Man in
the Ice, VoI. 3.:252-263
VORWOHL G., 1972 - Das Pollenpektrum von Honigen aus
den italienischen Alpen. Apidologie 3:309-340
81
Woody plant species
Distributional area
Altitudinal zone
Venosta Valley
Otz Valley
European Yew,
Taxus baccata
centraI European
montane
-
-
Norway Maple,
Acer platanoides
centraI European
montane
+
-
Common Ash,
Fraxinus excelsior
centraI European,
submediterranean
montane
+
+?
introduced
Juneberry,
Amelanchier ovalis
centraI European,
Alps
montane
+
+
Dogwood,
Comus
centraI European,
submediterranean
montane
+
+
Hazel,
Corylus avellana
centraI European
montane
+
+
Lime,
Tilia
centraI European
montane
+
+
Elm,
Ulmus
centraI European
montane
+
+
Wayfaring Tree,
Vibumum lantana
submediterranean
montane
+
+
Scotts Pine,
Pinus sylvestris
subboreal
montane
+
+
Larch,
Larix decidua
boreal
(montane), subalpine
+
+
Norway Spruce,
Picea abies
boreal
montane - subalpine
+
+
Swiss Stone Pine,
Pinus cembra
boreal
subalpine
+
+
Dwarf Mountain Pine,
Pinus mugo
centraI European alpine
subalpine, alpine
+
+
Birch,
Betula sect. albae
boreal
montane - subalpine
+
+
Green Alder,
Alnus viridis
boreal-subalpine
subalpine
+
+
Dwarf Willow,
Salix reticulata-Type
arctic-alpine
alpine
+
+
Tab.l - Inneralpine distribution of the wood species found in the Venosta Valley and the Otz Valley
82
Table 2'
DawnyOak
Oak forests
forests
btztal <lOOkm
(j)
Vinschgau <25km
•
Taxus baccata
Q)
•
•
Pine forests
•
•
Picea abies
Larix decidua
Pinus cembra
Pinus
mugolsylvestris
•
•
•
Spruce
forests
•
•
•
•
•
Gorges
(j)
•
Q)
Alluvial
forests
•
•
•
Snow bed
Hedges,
Forest
fringes
Tìmberline
•
•
•
•
Krummholz
ties
•
•
•
•
Betula sect.Albae
Corylus avellana
Ulmus
Amelanchier ovaZis
Acer platanoides
Cornus
Fraxinus excelsior
Viburnum lantana
TiZia
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Q)
Q)
•
•
•
•
•
•
•
•
•
•
•
•
•
•
SaZix reticulata
Alnus viridis
communi-
•
•
Tab.2 - Dendroecological results of the wood analyses: CD woodlands which do not occur in the Otz Valley, • woadlands
and species distributed on bath sides af the main Alpine range, @, species which occur anly in the valley battams sauth af
the main Alpine range
l
83
Anzahl
o
2
6
4
8
10
14
12
->.
LarixlPicee· Typ
W
PiceeILarix· Typ
-..J
Pinus sp.
~
Pinus cembra
~
->.
->.
Alnus vridls
W
Betula sp.
~
Camus sp.
~
->.
->.
Corylus avellana
W
Fnlxlnus sp.
~
->.
Salix sp.
~
->.
~
Tilissp.
18
16
~
~
->.
.....
~
Vlbtrnum lantana
->.
-..J
Fig. 1 - Results of the wood analyses: spectrum of the uncharred wood species (artefacts and other wood found at the site)
Acer sp.
1%
Alnus viridis
2,7%
Pinus mugo- Typ
Picea/Larix- Typ
12,6%
73,6%
Salix reticulataTyp
0,4%
Pomoideae
1,5%
Fig. 2 - Results of the charcoal analysis
84
Trichuris trichiura
1%
·
•
Pflanzenfragmente
45%
•••
I
• • •
• • • • •
I
•
• • • • • • • • •
I
•
I
•
.
Nichtbaumpollen
3%
• • • • • • •
•
I
Baumpollen
19%
•
•
Mineralteilchen
• • • • • • • • •
I
• • •
I
I
• • • • •
I
6%
•
·
•
•
I
I
I
•
• • •
I
0• • • • •
• • • •
I
• • •
.
• • • • • • • • • •
•
••
•
•
I
•
• • • • • • •
•
•
•
•
I
••
Diatomeae
1%
Holzkohlen
25%
Fig. 3 - Colon content
Gewebe indet.
10%
Steinzellen
3%
Triticum/Secale-Typ: Perikarp
24%
Haare, Fasern
5%
Cerealia: Spelzenfragmente
2OA!
Cerealia Indet.
5%
Triticum Haare
10%
Triticum/Secale-Typ: Apex
2%
Triticum/Secale-Typ: Testa
39%
Fig. 4 - Plant remains of the food residue from the colon
85
II I
. ....
'
I
Abies
Alnus
I
Betula
r·.~.tit%lìl
·.·.·.·.v .....
?:
rntWtiN
•
-
Corylus avellana
111%11
!y...,...• w····,·4
~
FCWlS
Frarinus ~rt:~lncr
Larir
Ostrya T.
~
jll1f~1
lE
Il
I~
==
(;.·;·"",,··,'d
h",·""·,,d
Pic~a
Pinus
PlaJanus
Populus
Ou~rcus roblLr
T
Salir
Tilia
Ulmus
~
CQnruS mas
Ericaceae
H~de,.a h~lir
Il
Juniperus
Rhamnus
SambILCUS
I
-
=
III
ili
Eilll
1.·.".·.·.·.',{"·4
Eilll
III
=
-
Umhelliferae
MUraceae
Cn«:iferae
Cichoriac~ae
papj/ionaaae
PJantaj!o
Rarnmculaaae
=
=
•
nigra T.
Graminea~
~ac~a~
P.Mbiaceae
•
x_cio T.
Achillea T.
Arkmisia
CMnopodi~T
Rv._r T.
Urricaceae
Fig. 5 - Comparison of the colon pollen spectrum with recent pollen spectra from the investigation area along a NorthSouth transect of the Eastern Alps: l) colon sample; 2) ice sample from the find spot; 3) sample of the northern alpine
border zone: montane regions; 4) sample of the montane regions in the Inntal; 5) sample of the subalpine regions in the
Otz Valley; 6) sample of the southern inneralpine zone (Venosta Valley, Italy): montane regions; 7) sample of the southern
inneralpine zone (Bozen, Italy): montane regions. (scale reading: l graduation mark means 5%)